超写实冬季浪漫肖像

```json
{
  "generation_request": {
    "meta_data": {
      "task_type": "photoreal_winter_romance_forest_couple",
      "version": "v1.0_SNOWY_FOREST_COUPLE_EMBRACE_NO_TEXT_EN",
      "priority": "highest",
      "language": "en"
    },
    "output_settings": {
      "aspect_ratio": "4:5",
      "orientation": "portrait",
      "resolution_target": "ultra_high_res",
      "render_style": "ultra_photoreal_cinematic_lifestyle",
      "sharpness": "crisp_but_natural",
      "film_grain": "subtle",
      "color_grade": "soft_neutral_winter",
      "dynamic_range": "natural_not_hdr",
      "skin_rendering": "real_texture_no_retouch",
      "no_text": true,
      "no_logos": true,
      "no_watermarks": true,
      "no_ui": true
    },
    "creative_prompt": {
      "scene_summary": "超写实冬季浪漫肖像，背景为雪林。一对情侣紧密相拥，额头/鼻子相触，营造出亲密的瞬间。可见小雪飘落，景深分明：前景雪花较大，柔和模糊；中景/背景雪花较小，清晰锐利。雪自然地落在树枝上，也轻轻覆盖在衣物上。营造舒适、柔和、电影般的氛围。无文字。",
      "environment": {
        "location_feel": "茂密的冬季森林，高大的树干和白雪覆盖的常青树",
        "ground": "新雪，带有细微的脚印和自然的纹理",
        "weather": "小雪纷飞",
        "lighting": "阴沉的冬日白昼，光线柔和漫射，自然阴影"
      },
      "subjects": {
        "couple": {
          "female_adult": {
            "wardrobe": "{argument name=\"female coat color\" default=\"white\"} 毛茸茸的仿皮草外套，保暖耳罩/发带，冬裤，冬靴",
            "pose": "紧密地站在男士怀中，一只手臂环绕他的背部/腰部，脸向上倾斜看向他",
            "expression": "柔和的微笑，双眼轻闭或半闭"
          },
          "male_adult": {
            "wardrobe": "米色/米白羊羔绒连帽衫或抓绒夹克，冬裤",
            "pose": "双臂环绕女士，头向下倾斜，额头/鼻子与她相触",
            "expression": "温柔，平静"
          }
        }
      },
      "camera_and_composition": {
        "shot_type": "生活肖像，视线水平，亲密中景",
        "lens_look": "50mm 等效焦距，浅景深，背景柔和分离",
        "framing": "情侣居中，森林形成自然的垂直线条，干扰最小",
        "focus": "面部和手部清晰，背景柔和模糊"
      },
      "physical_realism": {
        "snow_interaction": "树枝上逼真的积雪；肩膀和头发上细微的雪花斑点；靴子和地面接触处正确的阴影",
        "fabric_detail": "可见的毛茸茸外套纤维和羊羔绒纹理，手臂环抱处逼真的褶皱和张力"
      },
      "anatomy_constraints": {
        "priority": "maximum",
        "requirements": [
          "自然的面部比例"
        ]
      }
    }
  }
}
```